Owners Manual
Table Of Contents
- Dell EMC PowerVault ME4 Series Storage System Owner’s Manual
- Contents
- Storage system hardware
- Troubleshooting and problem solving
- Module removal and replacement
- ESD precautions
- Dealing with hardware faults
- Firmware updates
- Continuous operation during replacement
- Shutting down attached hosts
- Shutting down a controller module
- Verifying component failure
- Customer-replaceable units (CRUs)
- Attach or remove the front bezel of a 2U enclosure
- Replacing a drive carrier module in a 2U enclosure
- Replacing a DDIC in a 5U enclosure
- Replacing a controller module or IOM in a 2U or 5U enclosure
- Replacing a power supply unit (PSU) in a 5U enclosure
- Replacing a fan cooling module (FCM) in a 5U enclosure
- Replacing a power cooling module (PCM) in a 2U enclosure
- Completing the component installation process
- Verifying component operation
- Performing updates in PowerVault Manager after replacing an FC or SAS HBA
- Events and event messages
- Connecting to the CLI port using a serial cable
- Technical specifications
- Standards and regulations
Table 27. Event descriptions and recommended actions (continued)
Number Severity Description/Recommended actions
This event provides detail about the operation that failed.
Recommended actions:
● The disk may need to be removed, imported, repurposed, or replaced.
519 Error The system changed to the Full Disk Encryption degraded state.
Typically a disk-related condition has occurred.
Recommended actions:
● One or more disks may need to be removed, imported, repurposed, or replaced.
520 Info. The system that was in the Full Disk Encryption degraded state is no longer degraded.
The system has returned to normal operations.
Recommended actions:
● No action is required.
521 Error An error occurred while accessing the midplane SEEPROM to store or fetch Full Disk Encryption
keys.
The midplane memory is used to store the FDE lock key.
Recommended actions:
● The midplane may need to be replaced if the error persists.
522 Warning A scrub-disk-group job encountered an error at the indicated logical block address.
The event message always includes the disk group name and the logical block address of the
error within that disk group. If the block with an error falls within the LBA range used by a
volume, the event message also includes the volume name and the LBA within that volume.
Recommended actions:
● Examine event 207 that was logged previously to this event. Follow the recommended
actions for that event.
523 Info. This event provides additional details associated with a scrub-disk-group job, expanding on the
information in event 206, 207, or 522.
Recommended actions:
● Follow the recommended actions for the associated event.
524 Error A temperature or voltage sensor reached a critical threshold.
A sensor monitored a temperature or voltage in the critical range. When the problem is resolved,
event 47 is logged for the component that logged event 524.
If the event refers to a disk sensor, disk behavior may be unpredictable in this temperature
range.
Check the event log to determine if more than one disk has reported this event.
● If multiple disks report this condition there could be a problem in the environment.
● If one disk reports this condition, there could be a problem in the environment or the disk has
failed.
Recommended actions:
● Check that the storage system’s fans are running.
● Check that the ambient temperature is not too warm. The controller enclosure operating
range is 5°C to 35°C (41°F to 95°F). The expansion enclosure operating range is 5°C to
40°C (41°F to 104°F).
● Check for any obstructions to the airflow.
● Check that there is a module or blank plate in every module slot in the enclosure.
● If none of these recommended actions resolve the issue, replace the disk or controller
module that logged the error.
124 Events and event messages